01144 area code: Sheffield numbers starting 0114 4
01144 is not a separate area code. It is Sheffield (0114) followed by local numbers starting 4.
700,000 numbers are allocated in 70 blocks to 62 listed holders (Ofcom, 14 Oct 2026).
Check a 01144 number privately
Number ranges registered under 0114 4
| Number range | Listed holder | Status | Allocation date |
|---|---|---|---|
| 0114 4000000 – 0114 4009999 | Buzz Networks Limited | Allocated | 2010-02-24 |
| 0114 4010000 – 0114 4019999 | ICC Networks Ltd | Allocated | 2010-03-10 |
| 0114 4020000 – 0114 4029999 | Atomstream Limited | Allocated | 2010-02-25 |
| 0114 4030000 – 0114 4039999 | Datazero Ltd | Allocated | 2010-11-02 |
| 0114 4040000 – 0114 4049999 | Invosys Limited | Allocated | 2012-05-17 |
| 0114 4050000 – 0114 4059999 | Liquid 11 Limited | Allocated | 2010-04-26 |
| 0114 4060000 – 0114 4069999 | Digitech Solutions Global Limited | Allocated | 2010-04-21 |
| 0114 4070000 – 0114 4079999 | Telappliant Limited | Allocated | 2010-05-20 |
| 0114 4080000 – 0114 4089999 | Windsor Telecom Limited | Allocated | 2010-06-10 |
| 0114 4140000 – 0114 4149999 | Suretec Systems Ltd | Allocated | 2010-04-29 |
| 0114 4150000 – 0114 4159999 | Telephone Box Limited | Allocated | 2010-11-04 |
| 0114 4160000 – 0114 4169999 | Phone Co-Op Numbering Limited | Allocated | 2010-12-02 |
| 0114 4170000 – 0114 4179999 | Firstsound Ltd | Allocated | 2011-04-11 |
| 0114 4180000 – 0114 4189999 | Sky UK Limited | Allocated | 2013-06-20 |
| 0114 4190000 – 0114 4199999 | Invoco Ltd | Allocated | 2011-07-14 |
| 0114 4200000 – 0114 4209999 | Group 3 Technology Limited | Allocated | 2011-04-11 |
| 0114 4210000 – 0114 4219999 | HAVENSTOKE COMMUNICATIONS LTD | Allocated | 2026-03-17 |
| 0114 4240000 – 0114 4249999 | Relax Telecom Limited | Allocated | 2014-08-15 |
| 0114 4260000 – 0114 4269999 | Node4 Ltd | Allocated | 2011-07-28 |
| 0114 4270000 – 0114 4279999 | Media Hawk Ltd | Allocated | 2011-09-26 |
| 0114 4280000 – 0114 4289999 | Lanonyx Telecom Limited | Allocated | 2011-08-22 |
| 0114 4290000 – 0114 4299999 | Internexus Networks Limited | Allocated | 2011-11-18 |
| 0114 4300000 – 0114 4309999 | Orbtalk Limited | Allocated | 2011-06-14 |
| 0114 4330000 – 0114 4339999 | INTELLIGENT EXCHANGES LIMITED | Allocated | 2026-01-26 |
| 0114 4350000 – 0114 4359999 | Minotaur Telecom Limited | Allocated | 2013-01-31 |
| 0114 4360000 – 0114 4369999 | Cloudcall Limited | Allocated | 2011-06-21 |
| 0114 4370000 – 0114 4379999 | Kalnet4U Ltd | Allocated | 2011-12-01 |
| 0114 4380000 – 0114 4389999 | TalkTalk Communications Limited | Allocated | 2011-10-31 |
| 0114 4400000 – 0114 4409999 | Nexbridge Communications Limited | Allocated | 2012-01-09 |
| 0114 4420000 – 0114 4429999 | Vonage Business Limited | Allocated | 2023-04-14 |
| 0114 4430000 – 0114 4439999 | Bicom Systems EURL | Allocated | 2012-03-02 |
| 0114 4440000 – 0114 4449999 | Tuxtel Ltd | Allocated | 2011-11-28 |
| 0114 4460000 – 0114 4469999 | IOVOX Limited | Allocated | 2012-03-05 |
| 0114 4470000 – 0114 4479999 | 8x8 Communications UK Limited | Allocated | 2012-03-26 |
| 0114 4490000 – 0114 4499999 | Sky UK Limited | Allocated | 2013-06-20 |
| 0114 4500000 – 0114 4509999 | Gamma Telecom Holdings Limited | Allocated | 2021-03-31 |
| 0114 4510000 – 0114 4519999 | Orange Business Holdings UK Limited | Allocated | 2012-10-16 |
| 0114 4520000 – 0114 4529999 | Gamma Telecom Holdings Limited | Allocated | 2021-03-31 |
| 0114 4530000 – 0114 4539999 | TalkTalk Communications Limited | Allocated | 2013-02-18 |
| 0114 4550000 – 0114 4559999 | Content Guru Limited | Allocated | 2012-10-12 |
| 0114 4570000 – 0114 4579999 | Sky UK Limited | Allocated | 2014-01-15 |
| 0114 4600000 – 0114 4609999 | Fuse 2 Communications Ltd | Allocated | 2024-01-22 |
| 0114 4610000 – 0114 4619999 | Hyperoptic Ltd | Allocated | 2016-05-12 |
| 0114 4630000 – 0114 4639999 | DIDWW Ireland Limited | Allocated | 2014-11-18 |
| 0114 4670000 – 0114 4679999 | Redwood Technologies Ltd | Allocated | 2018-11-15 |
| 0114 4690000 – 0114 4699999 | XoverX Ltd | Allocated | 2013-04-25 |
| 0114 4700000 – 0114 4709999 | YayYay Limited | Allocated | 2015-04-07 |
| 0114 4710000 – 0114 4719999 | Central Technology Limited | Allocated | 2015-09-01 |
| 0114 4730000 – 0114 4739999 | Sky UK Limited | Allocated | 2015-09-18 |
| 0114 4740000 – 0114 4749999 | GCI Network Solutions Limited | Allocated | 2023-12-22 |
| 0114 4760000 – 0114 4769999 | Alnitak GmbH | Allocated | 2015-10-23 |
| 0114 4770000 – 0114 4779999 | I.T Communications Limited | Allocated | 2015-05-19 |
| 0114 4780000 – 0114 4789999 | Gamma Telecom Holdings Limited | Allocated | 2016-02-16 |
| 0114 4790000 – 0114 4799999 | EVE CONNECT LTD | Allocated | 2022-05-25 |
| 0114 4810000 – 0114 4819999 | NFON UK Ltd | Allocated | 2016-04-29 |
| 0114 4820000 – 0114 4829999 | Tango Networks UK Ltd | Allocated | 2016-04-29 |
| 0114 4830000 – 0114 4839999 | Dial 9 Communications Limited | Allocated | 2016-05-19 |
| 0114 4840000 – 0114 4849999 | Number Services Ltd. | Allocated | 2018-11-22 |
| 0114 4850000 – 0114 4859999 | Adepteo Limited | Allocated | 2017-01-16 |
| 0114 4860000 – 0114 4869999 | Antheus Telecom Limited | Allocated | 2017-08-23 |
| 0114 4880000 – 0114 4889999 | IOVOX Limited | Allocated | 2016-12-12 |
| 0114 4890000 – 0114 4899999 | IP Voice Networks Ltd | Allocated | 2017-09-20 |
| 0114 4900000 – 0114 4909999 | Fuse 2 Communications Ltd | Allocated | 2017-07-03 |
| 0114 4910000 – 0114 4919999 | Mission Labs Limited | Allocated | 2017-08-29 |
| 0114 4920000 – 0114 4929999 | Zapappi Ltd | Allocated | 2017-10-19 |
| 0114 4930000 – 0114 4939999 | Infinity Tracking Ltd | Allocated | 2019-05-16 |
| 0114 4940000 – 0114 4949999 | TELNYX UK LIMITED | Allocated | 2020-04-28 |
| 0114 4950000 – 0114 4959999 | SiPalto Ltd | Allocated | 2019-11-05 |
| 0114 4970000 – 0114 4979999 | EG TECHNOLOGIES LIMITED | Allocated | 2020-01-21 |
| 0114 4990000 – 0114 4999999 | ICUK Computing Services Limited | Allocated | 2019-08-12 |
| 0114 4090000 – 0114 4099999 | Not listed | Protected | Not recorded |
| 0114 4100000 – 0114 4109999 | Not listed | Protected | Not recorded |
| 0114 4110000 – 0114 4119999 | Not listed | Protected | Not recorded |
| 0114 4120000 – 0114 4129999 | Not listed | Protected | Not recorded |
| 0114 4130000 – 0114 4139999 | Not listed | Quarantined | Not recorded |
| 0114 4220000 – 0114 4229999 | Not listed | Protected | Not recorded |
| 0114 4230000 – 0114 4239999 | Not listed | Protected | Not recorded |
| 0114 4250000 – 0114 4259999 | Not listed | Protected | Not recorded |
| 0114 4310000 – 0114 4319999 | Not listed | Protected | Not recorded |
| 0114 4320000 – 0114 4329999 | Not listed | Protected | Not recorded |
| 0114 4340000 – 0114 4349999 | Not listed | Protected | Not recorded |
| 0114 4390000 – 0114 4399999 | Not listed | Protected | Not recorded |
| 0114 4410000 – 0114 4419999 | Not listed | Protected | Not recorded |
| 0114 4450000 – 0114 4459999 | Not listed | Protected | Not recorded |
| 0114 4480000 – 0114 4489999 | Not listed | Protected | Not recorded |
| 0114 4540000 – 0114 4549999 | Not listed | Protected | Not recorded |
| 0114 4560000 – 0114 4569999 | Not listed | Protected | Not recorded |
| 0114 4580000 – 0114 4589999 | Not listed | Protected | Not recorded |
| 0114 4590000 – 0114 4599999 | Not listed | Protected | Not recorded |
| 0114 4620000 – 0114 4629999 | Not listed | Protected | Not recorded |
| 0114 4640000 – 0114 4649999 | Not listed | Protected | Not recorded |
| 0114 4650000 – 0114 4659999 | Not listed | Protected | Not recorded |
| 0114 4660000 – 0114 4669999 | Not listed | Quarantined | Not recorded |
| 0114 4680000 – 0114 4689999 | Not listed | Protected | Not recorded |
| 0114 4720000 – 0114 4729999 | Not listed | Free | Not recorded |
| 0114 4750000 – 0114 4759999 | Not listed | Free | Not recorded |
| 0114 4800000 – 0114 4809999 | Not listed | Free | Not recorded |
| 0114 4870000 – 0114 4879999 | Not listed | Protected | Not recorded |
| 0114 4960000 – 0114 4969999 | Not listed | Protected | Not recorded |
| 0114 4980000 – 0114 4989999 | Not listed | Protected | Not recorded |
01144 allocation
Blocks whose local number starts with 4 under Sheffield (0114): 700,000 allocated numbers in 70 blocks.
- Allocated
- 700,000 numbers · 70 blocks
- Protected
- 250,000 numbers · 25 blocks
- Quarantined
- 20,000 numbers · 2 blocks
- Free
- 30,000 numbers · 3 blocks
Holders of 0114 4 numbers
Sky UK Limited holds 7.2% of the allocated numbers (40,000 numbers, 4 blocks).
| Holder | Share | Numbers | Blocks | Earliest allocation |
|---|---|---|---|---|
| Sky UK Limited | 7.2% | 40,000 | 4 | 2013-06-20 |
| Gamma Telecom Holdings Limited | 4.3% | 30,000 | 3 | 2016-02-16 |
| Fuse 2 Communications Ltd | 2.9% | 20,000 | 2 | 2017-07-03 |
| IOVOX Limited | 2.9% | 20,000 | 2 | 2012-03-05 |
| TalkTalk Communications Limited | 2.9% | 20,000 | 2 | 2011-10-31 |
| 8x8 Communications UK Limited | 1.4% | 10,000 | 1 | 2012-03-26 |
| Adepteo Limited | 1.4% | 10,000 | 1 | 2017-01-16 |
| Alnitak GmbH | 1.4% | 10,000 | 1 | 2015-10-23 |
| Antheus Telecom Limited | 1.4% | 10,000 | 1 | 2017-08-23 |
| Atomstream Limited | 1.4% | 10,000 | 1 | 2010-02-25 |
| Bicom Systems EURL | 1.4% | 10,000 | 1 | 2012-03-02 |
| Buzz Networks Limited | 1.4% | 10,000 | 1 | 2010-02-24 |
| Central Technology Limited | 1.4% | 10,000 | 1 | 2015-09-01 |
| Cloudcall Limited | 1.4% | 10,000 | 1 | 2011-06-21 |
| Content Guru Limited | 1.4% | 10,000 | 1 | 2012-10-12 |
| DIDWW Ireland Limited | 1.4% | 10,000 | 1 | 2014-11-18 |
| Datazero Ltd | 1.4% | 10,000 | 1 | 2010-11-02 |
| Dial 9 Communications Limited | 1.4% | 10,000 | 1 | 2016-05-19 |
| Digitech Solutions Global Limited | 1.4% | 10,000 | 1 | 2010-04-21 |
| EG TECHNOLOGIES LIMITED | 1.4% | 10,000 | 1 | 2020-01-21 |
| EVE CONNECT LTD | 1.4% | 10,000 | 1 | 2022-05-25 |
| Firstsound Ltd | 1.4% | 10,000 | 1 | 2011-04-11 |
| GCI Network Solutions Limited | 1.4% | 10,000 | 1 | 2023-12-22 |
| Group 3 Technology Limited | 1.4% | 10,000 | 1 | 2011-04-11 |
| HAVENSTOKE COMMUNICATIONS LTD | 1.4% | 10,000 | 1 | 2026-03-17 |
| Hyperoptic Ltd | 1.4% | 10,000 | 1 | 2016-05-12 |
| I.T Communications Limited | 1.4% | 10,000 | 1 | 2015-05-19 |
| ICC Networks Ltd | 1.4% | 10,000 | 1 | 2010-03-10 |
| ICUK Computing Services Limited | 1.4% | 10,000 | 1 | 2019-08-12 |
| INTELLIGENT EXCHANGES LIMITED | 1.4% | 10,000 | 1 | 2026-01-26 |
| IP Voice Networks Ltd | 1.4% | 10,000 | 1 | 2017-09-20 |
| Infinity Tracking Ltd | 1.4% | 10,000 | 1 | 2019-05-16 |
| Internexus Networks Limited | 1.4% | 10,000 | 1 | 2011-11-18 |
| Invoco Ltd | 1.4% | 10,000 | 1 | 2011-07-14 |
| Invosys Limited | 1.4% | 10,000 | 1 | 2012-05-17 |
| Kalnet4U Ltd | 1.4% | 10,000 | 1 | 2011-12-01 |
| Lanonyx Telecom Limited | 1.4% | 10,000 | 1 | 2011-08-22 |
| Liquid 11 Limited | 1.4% | 10,000 | 1 | 2010-04-26 |
| Media Hawk Ltd | 1.4% | 10,000 | 1 | 2011-09-26 |
| Minotaur Telecom Limited | 1.4% | 10,000 | 1 | 2013-01-31 |
| Mission Labs Limited | 1.4% | 10,000 | 1 | 2017-08-29 |
| NFON UK Ltd | 1.4% | 10,000 | 1 | 2016-04-29 |
| Nexbridge Communications Limited | 1.4% | 10,000 | 1 | 2012-01-09 |
| Node4 Ltd | 1.4% | 10,000 | 1 | 2011-07-28 |
| Number Services Ltd. | 1.4% | 10,000 | 1 | 2018-11-22 |
| Orange Business Holdings UK Limited | 1.4% | 10,000 | 1 | 2012-10-16 |
| Orbtalk Limited | 1.4% | 10,000 | 1 | 2011-06-14 |
| Phone Co-Op Numbering Limited | 1.4% | 10,000 | 1 | 2010-12-02 |
| Redwood Technologies Ltd | 1.4% | 10,000 | 1 | 2018-11-15 |
| Relax Telecom Limited | 1.4% | 10,000 | 1 | 2014-08-15 |
| SiPalto Ltd | 1.4% | 10,000 | 1 | 2019-11-05 |
| Suretec Systems Ltd | 1.4% | 10,000 | 1 | 2010-04-29 |
| TELNYX UK LIMITED | 1.4% | 10,000 | 1 | 2020-04-28 |
| Tango Networks UK Ltd | 1.4% | 10,000 | 1 | 2016-04-29 |
| Telappliant Limited | 1.4% | 10,000 | 1 | 2010-05-20 |
| Telephone Box Limited | 1.4% | 10,000 | 1 | 2010-11-04 |
| Tuxtel Ltd | 1.4% | 10,000 | 1 | 2011-11-28 |
| Vonage Business Limited | 1.4% | 10,000 | 1 | 2023-04-14 |
| Windsor Telecom Limited | 1.4% | 10,000 | 1 | 2010-06-10 |
| XoverX Ltd | 1.4% | 10,000 | 1 | 2013-04-25 |
| YayYay Limited | 1.4% | 10,000 | 1 | 2015-04-07 |
| Zapappi Ltd | 1.4% | 10,000 | 1 | 2017-10-19 |
Weekly changes for 01144
1 block changes from 19 Aug 2026 to 17 Oct 2026. Each week counts a block once.
| From | To | Changed blocks |
|---|---|---|
| 2026-08-19 | 2026-08-26 | 0 |
| 2026-08-26 | 2026-09-02 | 0 |
| 2026-09-02 | 2026-09-09 | 0 |
| 2026-09-09 | 2026-09-16 | 0 |
| 2026-09-16 | 2026-09-24 | 0 |
| 2026-09-24 | 2026-09-30 | 1 |
| 2026-09-30 | 2026-10-07 | 0 |
| 2026-10-07 | 2026-10-17 | 0 |
These numbers belong to 0114 Sheffield. Methodology.
01144 source: Ofcom s1.csv, published 14 Oct 2026. Download 0114 4 blocks (CSV). Contains Ofcom copyright material.
Source detail · 01144
| Claim | Value | Identifier |
|---|---|---|
| allocated_numbers | 700000 | subcode:0114-4:allocated_numbers:fc227d9e:v1 |
| allocated_records | 70 | subcode:0114-4:allocated_records:fc227d9e:v1 |
| listed_holders | 62 | subcode:0114-4:listed_holders:fc227d9e:v1 |
| area_code | 0114 | subcode:0114-4:area_code:fc227d9e:v1 |
| first_digit | 4 | subcode:0114-4:first_digit:fc227d9e:v1 |
| snapshot_date | 14 Oct 2026 | subcode:0114-4:snapshot_date:fc227d9e:v1 |